June 4, 2007 — /PRNewswire-FirstCall/ — BILLERICA, MA — GSI Group Inc., a supplier of precision technology and semiconductor systems, today announced that a new customer, Rexchip, has ordered multiple M550 Infrared laser based wafer repair systems. The M550 is GSI’s newest Wafer Repair System designed for faster throughput and accuracy.

Rexchip Electronics Corporation, headquartered in Taiwan, is a joint venture between Elpida Memory and Powerchip Inc. Both companies are leading manufacturers of DRAM devices used in applications for notebook PCs and servers.

Nino Federico, vice president and general manager of GSI’s Semiconductor Systems Division, says, “Rexchip’s manufacturing ramp will create one of the largest concentrations of 300-mm DRAM wafer production in the world. We were pleased they chose our M550 systems for that mission.” He further comments, “Our systems are production-proven and provide the high throughput and low cost of ownership needed to enable success in today’s memory fab projects.”

About GSI Group Inc.
GSI Group Inc. supplies precision technology to the global medical, electronics, and industrial markets and semiconductor systems. GSI Group Inc.’s common shares are listed on Nasdaq (GSIG).

Contact:
Raymond Ruddy
Investor Relations of GSI Group
Tel: +1-978-439-5511 ext. 6170

Source: GSI Group Inc.

Web site: http://www.gsig.com